Question

factor 8x6 – 56x3 + 98.

Answer 1

what are the powers?/////////

Answer 2

8x^6 -56x^3+98

Answer 3

@nitz you their

Answer 4

ya

Answer 5

can you help me with this problem @nitz

Answer 6

its a quadratic in disguise

Answer 7

say; u = x^3

then u^2 = x^6

Answer 8

8u2 – 56u + 98

factor the u parts; then resub back in the xs

Answer 9

i dont get it :(

Answer 10

i assumed the ^3 and ^6 were throwing you off; but other than that, its just a quadratic to factor as usual

Answer 11

it is all throwing me off i dont understand this question at all

Answer 12

to factor is to pull it apart into its multipication parts

Answer 13

like: 15 factors int 3 and 5

Answer 14

its a good bet that an 8 factors out of this to reduce the numbers

Answer 15

8u2 – 56u + 98

8 (u2 -7u +1...)

12
-----
8)98
8
----
18
16
----
2

but maybe not

Answer 16

you got it typed up correctly?

Answer 17

this is the question

Explain, in complete sentences, how you would factor 8x6 – 56x3 + 98.

Provide the factors.

Answer 18

see if 8*98 has factors that add to 56

Answer 19

what when multiplied = 49 but when added equals -28 ? that is where i am stuck

Answer 20

8*98 = 720
64
-----
784

factors of 784 are:

1 784
2 392
4 98
8 49

7 112
14 56
28 28

well, that doesnt look promising

Answer 21

lets try to pull it apart by completing the square

8u2 – 56u + 98

8(u2 -7u) + 98

8(u2 -7u + 3.5^2) + 98 - 8(3.5^2)

8(u-3.5)^2

Answer 22

and since u=x^3

8(x^3-3.5)^2

thats about the best I can make of it :/

Answer 23

http://www.wolframalpha.com/input/?i=8%28x%5E3-3.5%29%5E2

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